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1, 双刃剑:
Two-Bladed Sword （更确切）或者Double-edged sword

2, 网络犯罪 Cyber Crime
3,网络情色 cyber porn
4,低俗化新闻yellow sheet

Network is a two-bladed sword，along with the convenience it brings to people, it also produces lots of problems such as hacker rampancy,cyber porn overflow, cyber crime. Among them cyber porn is been paid more attention for its broadly influence and profound extent. Internet is gradually being "Fenceless brothel" depicted as Marshall McLuhan. It is mainly due to flabby network media management and noveletish indulging of the internet users. During the production and spreading of sexual news, network medias and internet users meet the reciprocal pointstheir of mutual benefits. The sowers cannot help providing all kinds of informations due to the multiple need of internet users and they also have to satify the yellow sheet need of internet users simultaneously. The cyber porns provided by the sowers not only satify the internet users' need, but also simulate their desire for seeking these information, thus they can explore broader market.

Network is a double-edged sword,it brings the people convenience and simultaneously lots of problems also,namely hacker rampancy,sex overflow,net crime and so forth.People are inclined to keep close eyes on sex overflow because of its very incidence.Network is increasingly perceived as the "Fenceless brothel" depicted as Marshall McLuhan.It is mainly due to the relaxation of the network media and the noveletish indulgence of the mass. In the process of producing and spreading of sex news,the media and the mass found the reciprocal points.Difference needs of the mass determine that the sowers have to supply various information,at the same time,it also meets the requirement of the noveletish need of the mass. Sex news supplied by the sowers,on the one hand,meets the requirement of the mass,on the other hand ,inspires the mass desire to get this kind of information,and thereby broadens the market.